EP 0611021 A3 19950614 - Image generator.
Title (en)
Image generator.
Title (de)
Bilderzeugungsgerät.
Title (fr)
Générateur d'image.
Publication
Application
Priority
- EP 90900934 A 19891205
- GB 8828342 A 19881205
Abstract (en)
[origin: WO9006561A1] An apparatus for generating an image from data defining a model including a plurality of opaque and translucent features. The image is intended to represent a view of the model from a predetermined eyepoint and is made up from an array of screen space pixels. The image area is divided into an array of sub-areas each of which covers at least one pixel. For each feature in the model that is potentially visible from the eyepoint, a test is conducted to determine which of the sub-areas is at least partially covered by that feature. The position in screen space of at least one sampling point within each sub-area is determined. For each sub-area in turn, and for each sampling point a test is conducted to determine which of the features cover that sampling point. For each feature which covers a sampling point, a function of the distance from the eyepoint to that feature at the sampling point is determined. An output for each pixel within a sub-area is produced, the pixel output corresponding to the combined effects of the sampling point outputs for all sampling points which contribute to that pixel, and the pixel outputs are displayed.
IPC 1-7
IPC 8 full level
G06T 15/00 (2011.01); G09B 9/30 (2006.01)
CPC (source: EP KR US)
G06T 1/60 (2013.01 - EP US); G06T 15/00 (2013.01 - EP KR US); G09B 9/301 (2013.01 - EP US)
Citation (search report)
- [A] WHITTED: "PROCESSING REQUIREMENTS FOR HIDDEN SURFACE ELIMINATION AND REALISTIC SHADING", DIGEST OF PAPERS SPRING COMPCON82, 22 February 1982 (1982-02-22), NEW YORK US, pages 245 - 250
- [A] BOUVILLE E.A.: "GENERATING HIGH QUALITY PICTURES", EUROGRAPHICS 84, 8 June 1985 (1985-06-08), AMSTERDAM, pages 85 - 112
Designated contracting state (EPC)
AT BE CH DE ES FR IT LI LU NL SE
DOCDB simple family (publication)
WO 9006561 A1 19900614; AT E155595 T1 19970815; AT E159367 T1 19971115; AT E177228 T1 19990315; AT E178421 T1 19990415; AU 4660089 A 19900626; CA 2004539 A1 19900605; DE 68928181 D1 19970821; DE 68928181 T2 19971218; DE 68928391 D1 19971120; DE 68928391 T2 19980402; DE 68928941 D1 19990408; DE 68928941 T2 19990812; DE 68928966 D1 19990506; DE 68928966 T2 19990916; EP 0446293 A1 19910918; EP 0446293 B1 19970716; EP 0611020 A2 19940817; EP 0611020 A3 19941221; EP 0611020 B1 19990303; EP 0611021 A2 19940817; EP 0611021 A3 19950614; EP 0611022 A2 19940817; EP 0611022 A3 19941221; EP 0611022 B1 19990331; EP 0621548 A2 19941026; EP 0621548 A3 19941221; EP 0621548 B1 19971015; GB 2226937 A 19900711; GB 2226937 B 19940105; GB 8828342 D0 19890105; GB 8927448 D0 19900207; JP H04502368 A 19920423; KR 0166066 B1 19990115; KR 910700504 A 19910315; US 5363475 A 19941108
DOCDB simple family (application)
GB 8901451 W 19891205; AT 90900934 T 19891205; AT 94201376 T 19891205; AT 94201378 T 19891205; AT 94201379 T 19891205; AU 4660089 A 19891205; CA 2004539 A 19891204; DE 68928181 T 19891205; DE 68928391 T 19891205; DE 68928941 T 19891205; DE 68928966 T 19891205; EP 90900934 A 19891205; EP 94201376 A 19891205; EP 94201377 A 19891205; EP 94201378 A 19891205; EP 94201379 A 19891205; GB 8828342 A 19881205; GB 8927448 A 19891205; JP 50111289 A 19891205; KR 900701681 A 19900802; US 68992494 A 19941108